Cannot display an object when using AWS DynamoDB

Question

I start with dynamoDB. I am using enotion mapping enity:

@DynamoDBTable(tableName = "ProductCatalogz") public static class Book { private int id;+ private String title;+ private String ISBN;+ private Set<String> bookAuthors;+ // private DimensionType dimensionType; @DynamoDBHashKey(attributeName = "Id") public int getId() { return id; } public void setId(int id) { this.id = id; } @DynamoDBAttribute(attributeName = "Title") public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } @DynamoDBAttribute(attributeName = "ISBN") public String getISBN() { return ISBN; } public void setISBN(String ISBN) { this.ISBN = ISBN; } } 

and

 public static void main(String[] args) throws IOException { AWSCredentials credentials = new PropertiesCredentials( Tester2.class.getResourceAsStream("/AwsCredentials.properties")); client = new AmazonDynamoDBClient(credentials); Region usWest2 = Region.getRegion(Regions.US_EAST_1); client.setRegion(usWest2); Book book = new Book(); book.setId(1); book.setTitle("Book 502"); book.setISBN("5555555555555"); book.setBookAuthors(new HashSet<String>(Arrays.asList("Author1", "Author2"))); // book.setDimensions(dimType); DynamoDBMapper mapper = new DynamoDBMapper(client); mapper.save(book); } 

But when I ran this error:

 Exception in thread "main" ResourceNotFoundException: Status Code: 400, AWS Service: AmazonDynamoDBv2, AWS Request ID: NSG3K0BQOBCPNQONE8, AWS Error Code: ResourceNotFoundException, AWS Error Message: Requested resource not found at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:644) at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:338) at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:190) at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:1245) at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.updateItem(AmazonDynamoDBClient.java:1026) at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.save(DynamoDBMapper.java:636) at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.save(DynamoDBMapper.java:483) at test.Tester2.main(Tester2.java:47) 

Please help me

Answer 1

The message Requested resource not found means that the DB Dynamo table was not found. You must first create it through the AWS console, API, or CLI.

Answer 2

Make sure you set the endpoint on the client

 BasicAWSCredentials b = new BasicAWSCredentials("Access Key ID","Secret Access Key"); AmazonDynamoDBClient client = new AmazonDynamoDBClient(b); client.setEndpoint("dynamodb.ap-northeast-1.amazonaws.com"); 

See http://docs.aws.amazon.com/general/latest/gr/rande.html#ddb_region for a complete list of endpoints for DynamoDB